Method of loading pin-tumbler locks and tool therefor



3. s. BRADLEY, 1m METHOD OF LOADING PIN TUMBLER LOCKS AND TOOL THEREFOR.

APPLICAHON FILED OCT- 3. I92! 1,437,832, Patented Dec. 5, 1922.

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Patented Dec. 5, lQFZZQ I I i 2 2 I,

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Applicationfiled ne ther 3, 1 921. seri l No. 505,212. 2 i i i To all whom z'zfmcty concern." v p interior of the key-cylinder, chamber and Be it known that I, JOHN S. BRADLEY, J12, formed with holeslregistering. with v the a citizen of the 'United States, residing at spring-pin.,pockets'and within which the New Haven, in the county of New Haven key-cylinder turns, but the-useofthis sleeve 5 and State of Connecticuuflhave invented a isjobjectionahle. [The .object'ot this invent-'60 new and useful Improvement in Methods of tion is toload pin-tumbler" locks without the Loading Pin-Tumbler Locks and Tools use of a sleeve,and the invention consists in Therefor; andgl do hereby declare the follow-; the method of loading pin-tumbler locks and. ing, when taken in connection with the aca tool'therei'or, as hereinafter described and companying drawings and the characters of particularly recited in the claims.

reference marked. thereon, to be a full, clear, In illustrating my invention, I have shown and exact description of the same, and a portion of a vehicle handle 15 of usual conwhich said drawings constitute part of this struction, which is formed with the usual application, and represent inkey-cylinder chamber 16and with a series 15 Fig. 1a plan view oi. a loading-tool tor of spring-pin pockets 17 more or less in v pin-tumbler locks constructed in accordance number, these pockets being closedfby plugs with my invention. 18, the outer ends of which are ground flush Fig. 2 a front view of the same. with the surface of the handle, so that, when Fig. 3 a rear view of the same. the handle is finished, the plugs will not ap- 20 Fig. 4 a longitudinal sectional view of pear. The loading-tool 19 corresponds in the same. form to an ordinary key-cylinder and is par- Fig. 5 a transverse sectional viewof the tially divided longitudinally by a transversesame. slot 20, which is intersected by pin-pockets v Fig. 6 a sectional view of a vehicle-handle 21 and at the rear the slot is extended by a 25 lock showing pockets therein closed by groove 22 through the end of the loading-'80 plugs. p tool. Thistool is also provided with a i Fig. 7 a similar view, showing the pocket forwardly-projecting handle 23. plugs made flush with the outer surface, and In carrying out my method for loading a loading-tool and pick inserted into the pin-tumbler looks, after the handle or casing cylinder-chamber. i is finished, pins 24, with springs 25, are

Fig. 8 a similar. view, with the springplaced inthe loading-tool 19 andheld in pins inserted into their pockets and held in place bya pick-wire 26, and. the tool, with place by the pick with the loading tool rethe pick-wire, is inserted into the chamber moved. it 16, so that the spring-pins standin line with 35 Fig. 9 a similar View with the key-cylinthepockets 17. The pick is thenremoved der partially entered into the key-cylindered and inserted above the pins 24:, as shown by chamber. v broken lines in Figure 7, and those pins and Fig. 10 a similar View, with the key-cylinthe springs 25 are forced into the pockets der in its final position, and unlocked. 17, .in which they are held by the pick 26, 4 Fig. 11 a similar view, showing the key-x the inner end of which may enter a steadycylinder in its locked position. ing-hole 28 formed for it in the inner end This invention relates to improvement in of the cylinder chamber. The loading-tool and method of loading pin-tumbler locks is then withdrawn, which is made possible and. tool therefor. In assembling pin-tumby providing it with the groove 22. A

45 bier locks and particularly locks with blind key-cylinder 27 of usual construction, loaded pockets and dead end cylinder chambers, the with its pins 29, is inserted into the chamber holes which are to form pockets for the 16, riding upon the pick 26, as shown in spring-pins are closed at their outer ends by Figure 9 of the drawings. The pick may plugs, and this is done before the casing is then be removed. The cylinder is then se- 50 plated or otherwise finished, so as to present cured in the usual manner, as herein shown, a neat appearance, but after the holes have by locking-pin 30. When the cylinder is been plugged, difliculty is experienced in lo-' turned so that the pins 29 come in line with eating the spring-pins therein, and to overthe pins 24 they allow the pins 24 to enter come this difficulty a sleeve has been emthe key-cylinder and lock it in the usual lVith this method, cylinder-locks having so-called blind pockets and dead end cylinder chambers are conveniently and rapidly loaded and the use of a sleeve is avoided.

I claim:

1. A method of loading pin-tumbler locks having blind pockets, consisting in placing pins and springs in a loading-tool, compressing the spring-pins with a pick, inserting the loading-tool and pick into the key-cylinder chamber, -forcing the pins and springs into the casing pockets, and holding them therein by the said pick, Withdrawing the loadingtool and placing the'key-slot of a loaded keycylinder upon the said pickand inserting it into the cylinder-chamber, and Withdrawing the pick.

2. A loading-tool for pin-tumbler locks comprisingja cylinder formed with a transverse slot'and intersecting pockets, the said loading-tool also formed with a groove entering the rear end in linewith the said slot.

In testimony whereof, I have signed this specification in the presence oftwo subscrib- 25 ing Witnesses.

JOHN s. BRADLEY, JR. Witnesses:

M. S. BOTHUN-E,

J. L. BROCKETT. 

